Abstract: This invention provides for a method of combating fungi on plant material comprising applying to said plant material a fungicidally effective amount of at least two non-toxic water-soluble fungicidal compounds selected from the group consisting of metabisulphites, propionates and sorbates. Fungicidal compositions comprising at least two of said fungicidal compounds are also provided.

Abstract: Alfalfa, grass and other hay crops are sprayed with a coating agent such as a terpene to prevent leaf-shedding during drying or harvesting.

Abstract: A preservative or sterilant of the type used in the food and/or brewing industry is used to kill pests on crop and ornamental plants comprising applying to them a preservative or sterilant of the type used. Novel compositions contain such a preservative or sterilant together with a coating agent, e.g. di-1-p-menthene, and possibly also a surface-active agent.

Abstract: Crops are treated with a composition which prevents the premature opening of seed pods.

Abstract: In accordance with the invention, the effect of certain agricultural chemicals, viz. fungicides, herbicides, insecticides, nematocides and plant-growth regulators, is improved by co-administration of them with one or more of the following additives: carbohydrates, organic acids (particularly fatty acids and acids of the Krebs tricarboxylic acid cycle), vitamins and co-enzymes, purine and pyrimidine nucleosides and nucleotides, naturally occurring fats and oils, certain amino acids and (but not when the agricultural chemical is itself a plant-growth regulator) plant-growth regulators. The invention provides compositions containing one or more of the said agricultural chemicals and one or more of the said additives, and methods of improving the harvest of a given crop by applying to it one or more of the said agricultural chemicals and one or more of the said additives, either simultaneously or within up to about ten days of one another.